FIELD: agriculture. SUBSTANCE: an active component (arachidonic and/or eicosapentaenic acid or their lower alkyl esters) is dissolved in supercritical carrier taken from the group involving nitrogen, nitrous oxide, carbon dioxide, saturated and nonsaturated hydrocarbons containing up to 4 carbon atoms in molecule, inert gases and their mixtures to prevent oxidation of an active substance with oxygen air. Then substance is sorbed in seed cuticular layer at decrease of carrier parameters below critical values. Invention is used for seed presowing treatment. EFFECT: decreased consumption of an active substance.
